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[Solid phase coordination synthesis and characterization of polymimide and Sm ion-under microwave radiation].

Guang pu xue yu guang pu fen xi = Guang pu · 2002 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 3813

Under microwave irradiation, Sm3+ coordination complexes with a polyimide-related material were synthesized and characterized. The complex did not show characteristic Sm3+ fluorescence (suggesting mismatch between Sm3+ excitation level and polymer), but showe…

Study snapshot

PublicationGuang pu xue yu guang pu fen xi = Guang pu · 2002
Study typeengineering
Reported directionUnclear
Evidence ratingInsufficient

Abstract

Solid phase coordination reaction of Sm3+ and the resultant of the imidization of polycondensor of polycondensation and imidization of benzoguanamine(BGA) and 2, 4-tolylenediisocyanate (TDI) and pyromellitic dianhydride (PMIDA) under microwave irradiation were synthesized and studied. The effect of microwave irradiation time (power), the composition of reactants and the reaction temperature on the yield and Sm content in complexes were studied. The complex was determined by Fourier transform infrared absorption (FTIR), Fourier transform Roman spectrum (FTRS), scanning electric minor (SEM), 13C solid state nuclear magnetic resonance spectrometry and X-ray powder diffraction. The fluorescence intensity was measured by fluorescent emission spectrum and compared with thermal coordination. The magnetic susceptibilities were measured by magnetic curve. The results showed that the complex had not characteristic fluorescence of Sm3+, which illustrated that the first excitation level of Sm3+ and polymer could not match at all. But the complex showed good magnetic property of the ion.

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AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeengineering
Effect directionunclear
PopulationNot supplied
Sample sizeNot supplied
Exposuremicrowave · microwave irradiation time (power) varied
Evidence strengthInsufficientConfidence: 74% · Peer reviewed: yes

Main findings

Under microwave irradiation, Sm3+ coordination complexes with a polyimide-related material were synthesized and characterized. The complex did not show characteristic Sm3+ fluorescence (suggesting mismatch between Sm3+ excitation level and polymer), but showed good magnetic properties.

Outcomes measured

  • reaction yield
  • samarium (Sm) content in complexes
  • FTIR characterization
  • Raman spectrum characterization
  • SEM characterization
  • 13C solid-state NMR characterization
  • X-ray powder diffraction characterization
  • fluorescence emission intensity
  • magnetic susceptibility/magnetic properties

Limitations

  • No biological/health outcomes assessed (materials synthesis/characterization study).
  • Microwave exposure parameters (e.g., frequency, field strength) not reported in the abstract.
  • No sample size or replication details provided in the abstract.
View raw extracted JSON
{
  "study_type": "engineering",
  "exposure": {
    "band": "microwave",
    "source": "microwave irradiation (synthesis)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": "microwave irradiation time (power) varied"
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "reaction yield",
    "samarium (Sm) content in complexes",
    "FTIR characterization",
    "Raman spectrum characterization",
    "SEM characterization",
    "13C solid-state NMR characterization",
    "X-ray powder diffraction characterization",
    "fluorescence emission intensity",
    "magnetic susceptibility/magnetic properties"
  ],
  "main_findings": "Under microwave irradiation, Sm3+ coordination complexes with a polyimide-related material were synthesized and characterized. The complex did not show characteristic Sm3+ fluorescence (suggesting mismatch between Sm3+ excitation level and polymer), but showed good magnetic properties.",
  "effect_direction": "unclear",
  "limitations": [
    "No biological/health outcomes assessed (materials synthesis/characterization study).",
    "Microwave exposure parameters (e.g., frequency, field strength) not reported in the abstract.",
    "No sample size or replication details provided in the abstract."
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "microwave irradiation",
    "solid phase coordination",
    "samarium ion",
    "Sm3+",
    "polyimide",
    "benzoguanamine",
    "2,4-tolylenediisocyanate",
    "pyromellitic dianhydride",
    "FTIR",
    "Raman",
    "SEM",
    "solid-state 13C NMR",
    "X-ray powder diffraction",
    "fluorescence emission",
    "magnetic susceptibility"
  ],
  "suggested_hubs": []
}
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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: Not supplied
PubMed: 12914183

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